Various accessibility improvements

* Add announcement element with `aria-live`
* Add skip to main content element

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/views/Admin/Follows.vue

@@ -87,6 +87,11 @@ import RouteName from "../../router/name";
       },
     },
   },
+  metaInfo() {
+    return {
+      title: this.$t("Follows") as string,
+    };
+  },
 })
 export default class Follows extends Vue {
   RouteName = RouteName;